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Staff Data Scientist – Experimentation, Causal Inference
Location
United States
Posted
1 day ago
Salary
0
Seniority
Lead
Job Description
Staff Data Scientist – Experimentation, Causal Inference
HighLevel
• Define the end-to-end methodology every team follows - hypothesis → metrics → design → power → readout → decision - and make it the default • Own the statistical approach (significance, multiple comparisons, sequential testing, variance reduction like CUPED) for small-sample, fast-paced contexts where classic A/B power is hard to reach • Build the methods toolkit for our clustered, hierarchical data (user → sub-account/location → agency), where randomization and analysis units differ • Apply rigorous causal inference (matching, diff-in-diff, instrumental variables, synthetic control, etc) when clean experiments aren't feasible - churn, onboarding, GTM - separating real signal from selection bias, seasonality, and mix effects • Own the design discipline for running many experiments at once - layering, orthogonal experiments, holdouts, and guardrails that keep concurrent tests from contaminating each other • Partner with AI/ML teams to design and evaluate experiments for AI features, including measurement for non-deterministic, fast-iterating systems • Run the experiment review forum and hold the line on what counts as a real result • Build the Experimentation curriculum and templates that level up PMs and analysts so good design scales beyond you • Partner with Analytics Engineering on governed, experiment-ready data and consistent metric definitions • Influence leadership and cross-functional partners on where to invest, translating statistical nuance into clear, decision-grade guidance
Job Requirements
- 9+ years in data science, product analytics, or applied statistics, with deep hands-on experience designing and analyzing online controlled experiments at scale
- Strong applied statistics - frequentist foundations, Bayesian methods, power analysis, variance reduction, and the failure modes of A/B testing (peeking, multiple testing, network/cluster effects)
- Practical causal inference, with sound judgment about when a result is causal versus an artifact of how the data was generated
- Experience in small-sample, fast-paced, multi-product environments - you know when a decision needs a clean experiment and when it needs a fast, good-enough read
- Strong SQL and working proficiency in Python or R
- Cross-functional and senior-leadership influence - you raise others' experiment quality without direct authority.
Benefits
- EEO Statement: The company is an Equal Opportunity Employer.
- We invite you to voluntarily provide demographic information for compliance with government recordkeeping, reporting, and other legal requirements.
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